Baker&#39;s oven.



' M. MARCH.

BAKERS OVEN- APPLICATION FILED NOV. 11

Patented July 13, 1915.

Y 5 mm, whom WMJU zen of Germany,

prairie srArEs Parana Farce.

MAX MARCH, OF JERSEY CITY HEIGHTS, NEW JERSEY, ASSIGNOR TO THE GENERAL OVEN COMPANY, me, or NEW YORK, N. Y., A conronarroiv.

BAKERS OVEN.

To all whom it-may concern:

Be it known that I, MAx MARCH, a citiand residing in Jersey City Heights, in the county of Hudson and State of New Jersey, haveinvented certain new and'useful Improvements in Bakers Ovens, of which the following is a specification.

. This invention relates to a bakers oven of the type known as Diihrkoop oven', and characterized by; the interposition of a dead air chamber between the fire chamber and the baking chamber, by means of which the heat is transmitted in a uniform manner to the latter. By my invention,'the heat .within this air chamber may be readily con: trolled, and any excessive heat may be carried off and conveyed to the upper heating chamber located .erally. omitted, the

T which is roofed by. a

above the baking chamber, so as to supplement the heat which is 'received by said upperheating: chamber di re'ctly from the firechamber.

In theaccompanyin drawing: Figure 1 is a front elevation o a bakers oven em-' bodying 'myjinvention; Fig. 2 a vertical longitudinal sectionthrough part thereof. Fig. 3 a cross section on lineaa Fig. 2; Fig. 4 a horizontal section on line bb Fig. i and Fig. 5 a horizontal section on line c0 With the embodiment of the invention illustrated, the oven is provided with a front fire chamber 1, and with a pair of horizon tal flues 2 communicating therewith and forming part thereof. .With ovens having a rear fire chamber, the side flues 2 are on fire chamberexten in in that case through'theentirewidth of the oven. The top of the fire chamber (in which term are included the flues 2) is formed'by a numberof arches 3, and directly. above said arches is formed a deadair chamber-4,

numberfof arches" 5, supported upon girders 6. The arches in turn support the floor 7 of the baking chanfer 8, 'a concrete fi1ling'9, closingfup the gaps between the arches andjthe floor, so as to form a continuouslevel-foundation for the latter. Over baking "chamberS, extends an upper. heating'chamber 10,, that furnishes the top heat, and is shown to be divided into two compartments by ,a longitudinal partition 11." 7 Within I each compartment formed a balile' 1-2 and an inclined partition' 13,.which directs the heat'toa flue 14 leading to the =chimney, and controlled by -a ff Specification of Letters Patent.

I heat from the pipes 17,--which are located in j mounted in position, space,-are entirely concealed heat withinthe dead pit door.

cially while firing, 4 is heated excessively andin that case valves ,21'are opened to carry the superfiuous and a in fact objectionable heat through pipes 17 is; frequently faulty,

' Patented Jin ia, i915.

Applicatien filed November 11, 1914. Serial No. 871,460.

order to directly carry the fire chamber ,to the upper heating chamber, there are provided a pair of upright flues 16 that extend along the corners of the oven and. connect the horizontal flues 2 of the former to points'within the bafiies 12 of the. latter. Means are provided for likewise establishing direct communication betweenthe'dead air chamber 4 damper 15. In

' and'the upper heating chamber 10. These shaped metal means consistof'a pair of' U an air jacket 18, formed between an inner front oven wall -19, and an outer front oven wall 20. Each pipe 17 is vertically disposed and extends 'with its lower. leg through innerwall 1-9 4, while its upper leg into dead air chamber extends through wall 19 into upper heating chamber, 10. In order to regulate the heat carried. through pipe 17, it is provided-with a valve 21' the 'spindle of which extends outwardly through wall20, so as to be operable by means of-its handle,

tion described, the pipes 17 are securely do 'not take up useful will not radiate the heat into the bakery. 22 is a gage for indicating the degree of air space 4; 23 is the oven door;-2at the fire door, and 25 the ash *As is wellknown', an oven of the character described, transmits the heat from the fire chamber, tothe bottom of the baking chamber, not directly, or by means of flowing aircurrents,

but by means of the body of air contained in chamber 4, and which constitutes an excellent means for heating the baking chamber in a thoroughly uniform manner. i But it frequently happens, espethat' the air'in chamber into'the upper heating chamber 10. Thus thereis furnished additional top heat, which eration the gage indicates anexcessive heat in the dead air space which would tend to cut off. -The valves are of coursealso operated, whenever during baking op- By the construcfrom-view, and

because especially dur- .ing firing the'top .heat is weaker than the pipes 17 and chamber 4-. When the oven is not fired and the. valves are opened, a normal air pressure will be reestablished in all of its parts.

I. claim: r

1. A bakers oven having a fire chamber, a

baking chamber, a lower air chamber lo cated between fire chamber and baking chamber, an upper heating chamber above the baking chamber, and a valve-controlled pipe that establishes communication between the lower air chamber and theupper heating chamber.v

2. A bakers oven, having a fire chamber,

a baking chamber, a lower air chamber 10- cated between fire chamber and baking chamber, an upper heating chamber above 25 the baking chamber, an inner 'front Wall, an outer front Wall, an lntervenlng air jacket, and an upright U shaped pipe 10-.

cated Within said jacket, and extending with its-lower leg through the inner front Wall into the lower air chamber, and With its upper leg through said inner front Wall into .theupperheating chamber.

3. A bakers oven having a fire chamber, a baking chamber, a lower air chamber located between fire chamber and baking chamber, anupper heating chamber located above the baking chamber, flues that connect the fire chamber with the upper heating chamber, and valve-controlled pipes that connect the lower'air chamber with the upper heating chamber.

Y MAX MARCH.

, Witnesses: p

" MORRIS WV-JACOBI,

FRANK v.- BRIESEN. 

